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Steel Adapter, 1/4-18 Male NPT To 9/16-18 Female SAE O-Ring Boss (Straight Thread O-Ring), Straight

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Description & Features

Optimize your hydraulic systems with the Eaton Aeroquip Steel Adapter. This robust adapter facilitates connections between a 1/4-18 Male NPT and a 9/16-18 Female SAE O-Ring Boss, ensuring a secure assembly in demanding environments. Made from durable steel, the adapter is designed for reliability in marine, military, and chemical processing applications.

The straight configuration of this adapter allows for seamless integration into various industrial setups, including pulp and paper, food and beverage processing, and off-shore drilling use. With its precision-machined threads, this Eaton Aeroquip adapter offers a perfect fit, minimizing the risk of leaks and enhancing system performance.

SKU: 2246-4-6S

Supplier Part Number (MPN): 2246-4-6S

Alternate Part Numbers: C1BD38, MI-00319347, MINO-00015F65417

Specifications

A
1.36
Alternate Part Numbers
Alternate Part Number C1BD38, Alternate Part Number MI-00319347, Alternate Part Number MINO-00015F65417, Alternate Part Number MINO-00925X09707
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Size 1
0.25
End Size 2
0.56
End Type 1
NPTF
End Type 2
SAE ORB
Minimum Working Temperature
-40
Supplier Part Number
2246-4-6S
Thread 1
1/4-18
Thread 2
9/16-18
Thread Sealant
No
Tube I.D. 1
0.28
Product Weight
0.10 lbs

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Product Questions & Answers (3)

Question by: Tommy D on Nov 5, 2025, 9:26 AM
Trying to hook a 1/4-18 male pipe thread into an ORB port, is this the right adapter or am I mixing up sizes?
Answer by: Customer Support on Nov 7, 2025, 6:38 AM
For that setup, the ends match up as 1/4-18 male NPTF on one side and 9/16-18 female SAE O-Ring Boss on the other. It is a straight pipe to straight thread O-ring adapter, so it is meant for exactly that kind of NPTF to SAE ORB connection.
Question by: Gary B on Jul 8, 2025, 3:51 PM
Will this adapter work for connecting a 1/4" male NPT fitting to a 9/16" female SAE O-ring boss?
Answer by: Customer Support on Jul 10, 2025, 7:22 AM
this Eaton Aeroquip adapter's made to do just that: hook up a 1/4-18 male NPT to a 9/16-18 female SAE O-ring boss. It's a straight adapter, so it'll keep everything lined up.
Question by: Patty C on Jul 13, 2025, 12:20 PM
Got a line running 1/4 NPT male off a pump and need to tie into a 9/16-18 SAE O-ring port on a valve block. this adapter gonna work for that straight up?
Answer by: Customer Support on Jul 15, 2025, 6:16 AM
That's exactly the conversion this fitting handles. The male end is 1/4-18 NPT and the female end accepts a 9/16-18 SAE O-ring Boss straight thread, so it bridges those two thread types in a straight configuration without any angle. It's part of the Eaton Aeroquip 2246 Series, which covers NPTF external pipe to SAE O-ring Boss internal adapters. As long as your port and your line match those two thread sizes, you're set.